A. Answer(1,2, and 3) B.) Answer (1,2,3)
Posted: Fri Mar 04, 2022 10:26 am
A. Answer(1,2, and 3)
B.) Answer (1,2,3)
Table 3-2 AHof Some Common Substances Substance AH! (kJ/mol) Substance AH; (kJ/mol) -285.8 0 H2010) 0 -110.5 -393.5 C (graphite) CO(g) CO2(g) C,H,OHO CaCO3(s) CaOls) Nalg) NaCl(s) NH3(g) -411.2 -277.7 -46.3 -1 206.9 90.29 NO(g) NO (9) -635.6 33.85 Fe,O3(s) -824.2 81.56 NO(g) O lg) -241.8 H2O(g) 0
Exercises on Thermochemical Equations Objective: Perform calculations involving thermochemical equations Estimated Time Frame: 20 minutes AH ΔΗ ΔΗ, Procedure A. Calculate the standard enthalpies of the following reactions from the standard molar enthalpies of formation of the reactants and products. Write your solutions in a separate sheet of paper and submit it to your teacher. Identify if the reaction is endothermic or exothermic. Endothermic or Exothermic? 1. 2NH, (g) + 3N,Olg) - 4N,(g) + 3H,O(1) 2. CaCO3(s) CaO(s) + CO (g) 3. Clgraphite) + O2(g) - CO2(g) B. Hess's Law. Identify if the reaction is endothermic or exothermic. Chlorine trifluoride is a colorless, poisonous, and corrosive gas. It is produced from the reaction between chlorine fluoride and fluorine gas. CIF(g) + Falg) ClFylg) Determine the AH” for the overall reaction based on the three-step thermochemical processes below: (1) 2CİF(g) + O2(g) cl_O(g) + F,Olg) AH=167.5 kJ (2) 2clF.(g) + 20,19) ClO(g) + 3F,O (9) AH=341.4 kJ (3) 2F,Olg) 2F2(g) + Oslo) AH= 43.4 kJ
B.) Answer (1,2,3)
- A Answer 1 2 And 3 B Answer 1 2 3 1 (46.47 KiB) Viewed 47 times
- A Answer 1 2 And 3 B Answer 1 2 3 2 (46.47 KiB) Viewed 47 times
- A Answer 1 2 And 3 B Answer 1 2 3 3 (51.81 KiB) Viewed 47 times
Exercises on Thermochemical Equations Objective: Perform calculations involving thermochemical equations Estimated Time Frame: 20 minutes AH ΔΗ ΔΗ, Procedure A. Calculate the standard enthalpies of the following reactions from the standard molar enthalpies of formation of the reactants and products. Write your solutions in a separate sheet of paper and submit it to your teacher. Identify if the reaction is endothermic or exothermic. Endothermic or Exothermic? 1. 2NH, (g) + 3N,Olg) - 4N,(g) + 3H,O(1) 2. CaCO3(s) CaO(s) + CO (g) 3. Clgraphite) + O2(g) - CO2(g) B. Hess's Law. Identify if the reaction is endothermic or exothermic. Chlorine trifluoride is a colorless, poisonous, and corrosive gas. It is produced from the reaction between chlorine fluoride and fluorine gas. CIF(g) + Falg) ClFylg) Determine the AH” for the overall reaction based on the three-step thermochemical processes below: (1) 2CİF(g) + O2(g) cl_O(g) + F,Olg) AH=167.5 kJ (2) 2clF.(g) + 20,19) ClO(g) + 3F,O (9) AH=341.4 kJ (3) 2F,Olg) 2F2(g) + Oslo) AH= 43.4 kJ